如果别人问你what's up/what's going on 这类打招呼的话你需不需要回答?怎么回答?

如果别人问你what's up/what's going on 这类打招呼的话你需不需要回答?怎么回答? 如果对方问你“what's up?”能不能回答terrible what's up 如果别人问我我该怎么回答 如果别人问你What's your nationality ?你应该回答China还是Chinese? 如果有美国人问你what's up?你该怎么回答? 英语 名词语法,答：it is a pair of chopsticks.那么应该怎么问：what's this 还是 what are these 如果不知道别人怎么回答，你指着筷子应该问：what's this ,还是 what are these that's what's up 有时听见别人回应that's what's up, 别人问What·s up?这我该怎么回答? 英文What's up 别人对我讲,So,What's up? 别人打招呼说what's up?我该怎么回话/ what's happened 中的“s”是has吗?还是is?还是was?还是什么?what's happened和what happened有区别吗?如果别人问what's happened应该怎么回答?问what happened又该怎么回答? what's the big deal 这句话,是问别人你这么做是什么意思? 对方问你“what's up?（打招呼,问好）”能不能回答not so good? 一个美国人问你what's up时候应该怎么回答?还是不回答 What's up What’s up WHAT 'S UP What‘s up